export const PostType = new GraphQLObjectType({ name: "Post", description: "Post type properties", fields: () => ({ id: globalIdField("Posts"), // <-- Global id for use in relay title: { type: GraphQLString, resolve: (post) => post.title, }, body: { type: GraphQLString, resolve: (post) => post.body, }, }), interfaces: [nodeInterface], // <- Node Interface }); // Relay connection and edge export const { connectionType: PostConnection, edgeType: PostEdge } = connectionDefinitions({ nodeType: PostType, });

export const { nodeInterface, nodeField } = nodeDefinitions( (globalId) => { const { type, id } = fromGlobalId(globalId); /**  * type -> Type of global id (e.g: Post)  * id -> Identification id (e.g: uuid)  * Search for data where contains equal id in database or local array  */ }, (obj) => { /**  * obj -> Contains all properties returned from globalId function  * return -> Return type of data (e.g: Post)  */ return "Post"; } );

export const QueryType = new GraphQLObjectType({ name: "Query", description: "Query type root", fields: () => ({ node: nodeField // <-- Add Node Resolver query, post: { type: new GraphQLNonNull(PostConnection), // <-- PostConnection Relay args: connectionArgs, resolve: async (_, args, ctx) => { const data = await PostLoader.loadAll(); return connectionFromArray(data, args); // <-- Pagination Relay }, }, }), });

export const MutationType = new GraphQLObjectType({ name: "Mutation", description: "Mutation types", fields: () => ({ // Add all mutations functions }), });

export const schema = new GraphQLSchema({ query: QueryType, mutation: MutationType, // subscription: SubscriptionType });